Finding the Third Proportional to 108,721.50 and 238,881

Step by Step Solution

1. Step 1: Write the proportion equation
   108,721.50 : 238,881 = 238,881 : x
2. Step 2: Convert to fraction form
   108,721.50/238,881 = 238,881/x
3. Step 3: Cross multiply
   108,721.50x = 238,881 × 238,881
4. Step 4: Simplify right side
   108,721.50x = 57,064,132,161
5. Step 5: Solve for x
   x = 57,064,132,161/108,721.50
6. Step 6: Final answer
   x = 524,865.20